old and the tree possibly older. I wonder if there 

 are in any parts of our bodies some similar indi- 

 cations of progressive age. The teeth, I am 

 afraid, are very unreliable, nor do we go on grow- 

 ing all our life in superimposed layers, and if we 

 did the better half of humanity would not ex- 

 hibit cross-sections to general inspection, but 

 would doubtless polish and furbish the outer layer 

 to make it look fresh and young. 



It has been foretold that in a certain number 

 of generations, how many I do not know, the hu- 

 man race will have no hair and no teeth, both be- 

 coming atrophied from disuse and eventually, 

 from hidden rudiments, like the coccyx, the ap- 

 pendix, and the hairy points to our ears, vanish- 

 ing altogether. 



If these modifications take place, which is quite 

 possible, granted the unlimited time which evolu- 

 tionary changes demand, and the human teeth re- 

 tire before the invasion of chemical nourishment 

 without waste, I think the probability has been 

 lost sight of that the elaborate digestive and other 

 organs designed for the assimilation of large 

 masses of miscellaneous and chemically unpre- 



